Two in three West Australian adults are expected to take part in a $20 million splurge on lottery tickets in the hope of scooping Australia’s record $90 million Lotto jackpot next week.

Lottery fever has gripped WA and it is estimated five times more tickets than usual will be bought in the State for Tuesday’s Oz Lotto draw.

The $90 million prize pool is unprecedented in Australian lottery history and is the culmination of nine weeks of rolled-over Oz Lotto prizes.

Lotterywest chief executive Jan Stewart said lottery ticket sales in WA were up 6 per cent on last year and were expected to jump even higher for Tuesday’s bumper draw.

“Our experience is that irrespective of the economic climate, people seem to continue to spend the few dollars each week they have been accustomed to spending on a Lotto or scratchie ticket and to find a little more when there is something special on like a big Oz Lotto or Powerball jackpot or a Saturday Lotto Superdraw,” Ms Stewart said.

WA is a lottery-loving State, a fact which could be attributed to the ban on poker machines that has reduced gambling choices in the West.

Whether WA is luckier or just plays more, the State is full of Lotto winners. Over the past 12 months, seven of the 12 major (Division One) wins in the Oz Lotto game across Australia have gone to WA.

West Australian adults spend an average of $5.98 every week on the lottery and the clamour for tickets for Tuesday’s draw has shown they are spending more than ever.

Greg Mills, of Yokine Lottery Centre, said the number of people coming in to buy Lotto tickets had soared from an average of 250 a day to 350 in the run-up to Tuesday’s game.

“It’s pumping. People all want a share of this $90 million. It’s creating a lot of interest,” Mr Mills said.

Sadly, though, the chances of winning are slim — 45 million to one.

To improve your chances, it might be worth taking note of which numbers come up most often. The number 5 has been drawn 14 times over the past 50 Oz Lotto draws, while 45, 35 and 28 have come up 13 times each.

At the other end of the scale, the number 38 has emerged only three times in the past 50 draws. Numbers 6, 14, 36 and 39 were almost as unlucky, with four appearances each.

You could also buy your ticket in one of WA’s lottery hotspots. Kalgoorlie has had the most Division One wins over the past five years, with $31.7 million won by eight players.

Perth CBD is also a lucky place, with more than $26.4 million shared between 11 Division One ticket holders over the same period.

Morley has had the highest number of Division One winners with 12 tickets sharing $9.8 million.

The biggest Division One win of all time was $58.7 million, which was won in Victoria in the Powerball game in June 2008.